September 24, 1870

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Features

Improved Scroll-Sawing Machinery, Gutta-Percha

The History and Fortifications of Metz

Deep-Sea Exploration--How Soundings are Obtained

The Artisan in Denmark Spain, Portugal and Greece

Improved Wicket for Canal Locks

The Spider

By Edward C. H. Day

The Electric Telegraph

Improved Stove Cover, Dish, and Kettle Lifter

Freeland's Lock Nuts

The Finishing and Decoration of Machinery

Modern Chemistry

What are our Colleges Doing?

The Draft of Vehicles

Chemical Experiments

Progress of Foreign Invention- September 24, 1870

The "Worm" on the Ailanthus

Mileage System of Railroad Commutation Tickets

Fair of the American Institute

Recent American and Foreign Patents- September 24, 1870

Answers to Correspondents- September 24, 1870

Applications for the Extension of Patents- September 24, 1870

Official List of Patents- September 24, 1870

Departments

Letters

Correspondence- September 24, 1870

Recommended

New Books and Publications- September 24, 1870

Departments

Business and Personal- September 24, 1870

Purchase To Read More

Digital Issue ?Read or download this issue’s articles online. *A printed copy of this issue is not included. $7.99

Print + Digital All Access Subscription ?Read or download this issue’s articles online. Plus, subscribe to get Print, Online and Tablet access to the next 12 new issues to be released as well as Online access to archives back to 1845. $99.00

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